/*
 * @Describe: 
 * @version: 
 * @Author: TeaCold
 * @Date: 2021-06-14 17:21:30
 * @LastEditors: TeaCold
 * @LastEditTime: 2021-06-14 17:27:21
 */
#include<iostream>
using namespace std;
int main(void){
    const int PRICE=30;
int num,total;
float v,r,h;
num =10;
total=num*PRICE;
cout<<total<<endl;
r=2.5;
h=3.2;
v=3.14159*r*r*h;
cout<<v<<endl;

}